See exactly which images are slowing your site down
Paste a URL and Optimagio statically scans the page for image byte debt — oversized files, legacy formats, likely LCP images, missing dimensions, and caching gaps. You get a score, estimated savings, and a fix pack you can hand straight to your team.
- Free to run and uses zero optimization credits
- Finds oversized images, missing WebP/AVIF, and LCP risks
- Generates a fix pack with replacement-map CSV/JSON
Real product capability — not a placeholder.
What is a website image audit?
A website image audit is an analysis of the images on a page to quantify how much weight they add and how much could be saved. Optimagio’s audit is a static scan: a Go-based scanner fetches the page through SSRF-safe fetching, parses the HTML, linked CSS, preload hints, lazy-loading attributes, and framework data, then enriches important raster assets with metadata requests to measure size, format, dimensions, and cache/CDN signals.
What it detects
The audit flags oversized dimensions, images missing a modern format, above-the-fold heavy images, the likely LCP (Largest Contentful Paint) candidate, missing width/height attributes, and third-party report-only assets. It reports a score, fixable vs report-only counts, estimated savings, and a ranked table of the most valuable assets to fix.
From scan to fix pack
- 1
Enter a URL
Run a free single-page audit on any public page — bare domains and protocol-relative URLs are normalized to https automatically.
- 2
Review the findings
See the score, estimated savings, issue cards, top fixes, and a ranked asset table with sizes and dimensions.
- 3
Select fixable images
Same-origin fixable images are pre-selected by opportunity; adjust the selection and preview required credits in a dry run.
- 4
Download the fix pack
Paid optimization produces a ZIP of optimized files plus a replacement-map CSV/JSON and README so your team can swap URLs.
Built to find what matters
Sitemap-aware
Authenticated multi-page audits start from robots.txt and sitemaps, then add same-origin links — a bounded crawl, not a runaway spider.
LCP-focused
The likely Largest Contentful Paint image is identified so you fix the asset that actually moves Core Web Vitals.
Honest scope
Pure client-rendered pages with no static image hints fail clearly rather than guessing — no fake results.
Per-tier reach
Page caps scale by plan: 1 page on Free up to 50 on Pro/Business, with monthly scanned-URL allowances.
Shareable
Share a public report link with your team, or claim a public audit into your account.
Fix pack export
Replacement-map CSV/JSON pairs each original URL with its optimized file for a clean swap.
Frequently asked questions
Is the website image audit free?
Yes. Running an audit is free and uses zero optimization credits. You only spend credits if you choose to generate a paid fix pack that optimizes the selected images.
What does the audit detect?
Oversized image dimensions, images missing a modern format (WebP/AVIF), above-the-fold heavy images, the likely LCP candidate, missing width/height attributes, alt/accessibility gaps, and cache/CDN signals — with estimated savings for each.
Can it audit more than one page?
Authenticated audits scan multiple pages, discovered sitemap-first (robots.txt, sitemap.xml, sitemap_index.xml) and topped up with same-origin links. Page caps range from 1 on Free to 50 on Pro and Business.
What is a fix pack?
A fix pack is a downloadable ZIP of optimized images plus a replacement-map CSV/JSON and README. It pairs each original asset URL with its optimized replacement so your team can update the site.
Start optimizing your images today
Try the free public tool now, then upgrade for higher limits, bulk batches, the API, storage, and reports.
Free tier available · No card required to start · Cancel anytime